EFFECT OF COMBINATION OF Trichoderma harzianum AND PLANT GROWTH PROMOTING RHIZOBACTERIA (PGPR) DOSES ON THE GROWTH AND YIELD OF TOMATO (Solanum lycopersicum L.) AND ITS EFFECTIVENESS IN SUPPRESSING FUSARIUM WILT DISEASE

Abstract

Although the tomato (Solanum lycopersicum L.) has a high economic value and the potential to be exported, its productivity is still far below what it could be. It is therefore among the most promising horticultural products to be created. This is due to infertile soils, extreme weather conditions, chemical-induced land dysfunction, and biological factors, namely Fusarium wilt infestation. Tomato yield increase and disease control can be done with Trichoderma harzianum and PGPR. The aim of the research was to determine the best combination of doses of T. harzianum and PGPR for tomato growth and yield that was effective in suppressing Fusarium wilt. This research used a completely randomized design (CRD) with 28 experimental plot units, 7 treatments and 4 times repeated. Dosage The T. harzianum and PGPR tried were A (without T. harzianum without PGPR). B (T. harzianum, 10 g/plant). (T. harzianum, 20 g/plant). D (T. harzionum, 10 g/plant, PGPR, 15 ml/plant). E (7. harzianum 10 g/plant, PGPR 30 ml/plant). F (T. harzianum, 20 g/plant; PGPR, 15 ml/plant). G (T. harzianum, 20 g/plant, PGPR, 30 ml/plant). The Parameter in this study were plant height, stem diameter, number of leaves, intensity of attack, number of fruits per plant, fruit size per fruit, and fruit weight. planting.  The results showed that T. harzianum 10 g/plant+ PGPR 15 ml/plant combination, has the best effect on the growth and yield of tomato plants and is effective in suppressing Fusarium wilt disease.